VISIT TO (SANITIZED) RESEARCH CENTER REGARDING (SANITIZED) TASK#2.

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002800030021-7
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: November 30, 2006
• Sequence Number: 21
• Publication Date: June 1, 1966
• Content Type: MFR

Approved For Release D
NPIC/P&DS/D/6-
1 June 1966
SUBJECT: Visit tol Research Center Regarding
Task #2.
1. On 18 May the undersigned visited
for the purpose of observing progress on the
Photobleach Photography Contract and to discuss plans for a follow-on
effort for FY-1967-
2. Several laboratory experiments were observed: one concerning
a new film formulation that is blue in appearance, seems to band well
to a mylar base, and exhibits fairly good density characteristics.
The obtained sample has a D-maximum of about 1.25 with a reasonably
low fog density. Observation of a density step wedge through a blue
filter (for color equilization) beside the sample film appears to
reproduce about 8 steps of the 21 step density wedge.
25X1
preparing some density step wedge exposures of this material to be
included with a proposal for follow-on FY-1967 effort. Another of the
characteristics of this material demonstrated in the laboratory was
resolution. A resolution target was exposed and projection printed on
paper through a microscope. The projected print showed a resolution
capability in excess of 200 lines/mm; but because of the reproduction
and reading methods involved in the experiment, the ultimate resolution
could not be determined at this time. NPIC will receive samples of
exposed resolution targets at a later date. One unsolved problem of
this material is a method for retaining the image. Heat treatment will
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allow retention for a few days under normal room lighting or for viewing
with low light projectors, but intense light will cause it to bleach
out. Further experiments are to be conducted in an effort to solve
this kkix problem. A stripping overcoat on the film to remove the
chemical responsible for the bleaching may be required. The material
can be exposed in a few seconds using a standard 300 watt projection
lamp. The material shows promise and should be further investigated.
3. The parameters concerning a proposal for an FY-1967 effort
were discussed. In general the criteria will be as previously reported
in the NPIC memorandum of 8 February 1966, regarding a conference held
to determine interim objectives, that is, a D-maximum of 2.0, a D-minimum
of 0.10; a density range of 11 steps of the standard 21 step density
wedge; a resolution of 200 lines/mm; and exposure time not to exceed
30 seconds. In has been found that exposure (bleaching) is effected
by temperature. This phenomenon may be useful in controlling gamma
or contrast. A proposal for continuation of this effort in FY-1967
should be here about 15 June 1966.
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